The invention discloses an intelligent variable-frequency constant-temperature non water tank wall-hanging solar water heater and relates to the field of solar energy, in particular the intelligent variable-frequency constant-temperature non water tank wall-hanging solar water heater. The intelligent variable-frequency constant-temperature non water tank wall-hanging solar water heater comprises a scale inhibition water purifier (1), a water dynamic and static pressure reducing valve (2), a first water flow stop valve (3), a solar pressure control device (4), a non water tank solar heat collector (5), a second water flow stop valve (6), a third water flow stop valve (7), an instant intelligent variable-frequency temperature compensating device (8), a mechanical constant-temperature valve (9), a terminal shower head (10), a first pipeline three-way joint (11), a second pipeline three-way joint (12), a third pipeline three-way joint (13), a cold water pipeline (14), a hot water pipeline(15) and an overhauling drain pump (16). The intelligent variable-frequency constant-temperature non water tank wall-hanging solar water heater disclosed by the invention is material-saving, space-saving, water-saving and energy-saving and is convenient to install, use and maintain.